610         bs->backing_hd = bdrv_new("");  in bdrv_open()
620         ret = bdrv_open(bs->backing_hd, backing_filename, back_flags, back_drv);  in bdrv_open()
626             bs->backing_hd->keep_read_only = !(flags & BDRV_O_RDWR);  in bdrv_open()
629             bs->backing_hd->keep_read_only = bs->keep_read_only;  in bdrv_open()
655         if (bs->backing_hd) {  in bdrv_close()
656             bdrv_delete(bs->backing_hd);  in bdrv_close()
657             bs->backing_hd = NULL;  in bdrv_close()
760     if (!bs->backing_hd) {  in bdrv_commit()
764     if (bs->backing_hd->keep_read_only) {  in bdrv_commit()
768     ro = bs->backing_hd->read_only;  in bdrv_commit()
769     strncpy(filename, bs->backing_hd->filename, sizeof(filename));  in bdrv_commit()
770     open_flags =  bs->backing_hd->open_flags;  in bdrv_commit()
774         bdrv_delete(bs->backing_hd);  in bdrv_commit()
775         bs->backing_hd = NULL;  in bdrv_commit()
789             bs->backing_hd = bs_ro;  in bdrv_commit()
792         bs->backing_hd = bs_rw;  in bdrv_commit()
806             if (bdrv_write(bs->backing_hd, sector, buf, n) != 0) {  in bdrv_commit()
822     if (bs->backing_hd)  in bdrv_commit()
823         bdrv_flush(bs->backing_hd);  in bdrv_commit()
830         bdrv_delete(bs->backing_hd);  in bdrv_commit()
831         bs->backing_hd = NULL;  in bdrv_commit()
840         bs->backing_hd = bs_ro;  in bdrv_commit()
841         bs->backing_hd->keep_read_only = 0;  in bdrv_commit()
1361     if (bs->backing_hd && bs->backing_hd->encrypted)  in bdrv_is_encrypted()
1368     BlockDriverState *backing_hd = bs->backing_hd;  in bdrv_key_required()  local
1370     if (backing_hd && backing_hd->encrypted && !backing_hd->valid_key)  in bdrv_key_required()
1378     if (bs->backing_hd && bs->backing_hd->encrypted) {  in bdrv_set_key()
1379         ret = bdrv_set_key(bs->backing_hd, key);  in bdrv_set_key()
1710     if (bs->backing_hd && bs->backing_hd->encrypted)  in bdrv_get_encrypted_filename()